Image by Getty Images viaVolleyball is a good example. With three touches to work with, each touch is used to build momentum in returning the ball. The first player bumps the ball to the net to allow the second player to set the ball in the air for the last hit; a hard-to-return spike.
Players who return the ball with a bump, makes creating momentum for the opposition easier while putting themselves on the defensive.
Creating momentum is a process.